Abstract
Carboxylation of 1-arylpyrazole derivatives was developed using a ruthenium-catalyzed <i>ortho</i> silylation in conjunction with fluoride-mediated carboxylation with carbon dioxide. The two nitrogen atoms of pyrazole play crucial roles in promoting <i>ortho</i> silylation via the formation of a five-membered ruthenacycle and in accelerating aryl anion formation by lowering the electron density of the aromatic ring.
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